Home EXAMS EXPO: WAEC Mathematics Questions and Answers 2021/2022

# EXPO: WAEC Mathematics Questions and Answers 2021/2022

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### EXPO: WAEC Mathematics Questions and Answers 2021/2022.

WAEC Mathematics Questions and Answers: This WAEC 2021 mathematics expo question and answer is free for all candidates writing this year exams. If you are among those writing 2021 WAEC Examination, Feel free to expect free answer here.

The West African Examinations Council is an examination that is for all the west African country (Ghana, Nigeria, Sierra Leone, Liberia, and Gambia).

WAEC Mathematics Questions and Answers: Candidate that applied for the WAEC in any country should BOOKMARK this page for all and latest WAEC Mathematics exam expo.

## Today’s WAEC Mathematics Questions and Answers Expo Runs, 20th, Monday September 2021.

MATHS OBJ

10a

X² = 5² + 3²
X² = 25 + 9
X² = 34
X = √34
X = 5.83KM

Tan∅ = 3/5
Tan∅ = 0.6
∅ = Tan-¹ 0.6
∅ = 30.96
The true bearing of man U from Dogb is 20⁰+30.96⁰
= 50.96

10b.
X² + (x+2)² = 10²
X² + ([x+2)(x+2)] = 100
X² + [(x²+2x+2x+4)] =100
X²+x²+4x+4 = 100
2x² + 4x +4 = 100
2x² + 4x + 4 – 100 = 0
2x² + 4x – 96 = 0
X² + 2x – 48 = 0
X² + 8x – 6x – 48 = 0
X (x+8) -6 (x+8) = 0
(X-6) (x+8) = 0
X-6 = 0 or x+0 = 0
x = 6 or x – 8
The true value of X is = 6m

13a.
When Sani is 4 years old, T = 3
Principal, P = & 1,000.00
R = 4%
Using A = P ( 1+ r/100)^T
A = 1000 ( 1+ 4/100)³
A = 1000 (1.04)³
A = & 1,124.86

13b.
ABC = 180-50=130⁰ (Supplementary<S)
Join A to C : ACD = 90⁰ (< in a semicircle)

CAD = 180 – (ACD+ADC) [sum of <s in a triangle] = 180-(90+50)=40⁰
Also BAC=BCA (base <s of an isosceles)
BAC + BCA + BAC = 180 [sum of <s in a triangle]
2BAC + 130⁰ = 180⁰
BAC = 50/2 = 25

= 25+40
=65⁰

Question Number 1a.

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